the fbi hopes to get additional insight from tamerlan's wife. seen over the weekend leaving the family apartment. a rhode island native, she converted to islam and changed her name from katherine to karina. her family lawyer said monday, she was shocked to learn of her husband's role and had no idea until the fbi first released those surveillance pictures of him and named him a suspect. in fact, the lawyer says, the wife doesn't speak any russian and didn't really know what was going on. as to the younger brother's claims and statements to the fbi, investigators don't necessarily take at face value all that he has said. he has every reason to try to minimize his own role as the investigation into possible ties to overseas groups in russia remains a central focus of the case, george. >> brian, talk about living double-lives. we know that the younger brother was out partying on wednesday night. now we have learned more about where the older brother, tamerlan, was the day before the shootout. >> reporter: exactly. on that thursday, the day the fbi